Statement Of Financial Position [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||||||||
| Property, plant and equipment | — |
145,800,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
150,686,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — |
328,515,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
338,256,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — |
793,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
456,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — |
5,106,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,616,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets | — |
575,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
-
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — |
481,050,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
493,240,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||||||||
| Trade and other current receivables | — |
14,741,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
11,643,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets | — |
3,271,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,271,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
72,423,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
61,517,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
51,076,000
EUR
|
— |
| Current assets | — |
92,883,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
78,841,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — |
573,933,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
572,081,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital | — |
110,315,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
110,315,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — |
4,981,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
64,126,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Share premium | — |
4,002,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
4,002,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
11,051,000
EUR
|
139,100,000
EUR
|
2,653,000
EUR
|
4,002,000
EUR
|
15,929,000
EUR
|
4,981,000
EUR
|
-
EUR
|
110,315,000
EUR
|
131,000
EUR
|
-
EUR
|
64,126,000
EUR
|
11,051,000
EUR
|
15,929,000
EUR
|
67,624,000
EUR
|
144,713,000
EUR
|
4,002,000
EUR
|
82,000
EUR
|
110,315,000
EUR
|
11,048,000
EUR
|
33,211,000
EUR
|
110,505,000
EUR
|
267,000
EUR
|
72,000
EUR
|
41,970,000
EUR
|
4,002,000
EUR
|
216,326,000
EUR
|
15,929,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||||||||
| Non-current provisions for employee benefits | — |
569,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
707,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — |
363,610,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
365,952,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||||||||
| Current provisions for employee benefits | — |
62,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
49,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current provisions | — |
5,663,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,596,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables | — |
5,871,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,695,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — |
71,223,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
61,416,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — |
573,933,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
572,081,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |